I01.2

Billable
ChapterI00–I99
Ranksubcategory
Official Description

Acute rheumatic myocarditis

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Billable/specific code (valid for reimbursement).
  • •Chapter 9: Diseases of the Circulatory System (I00-I99).

Instructional Notes

Includes
  • Any condition in I00 with myocarditis
General instructions are available for the parent sections:
View CH9 NotesView I01 Notes

Clinical Hierarchy

CH9Diseases of the circulatory system (I00-I99)
I00-I02Acute rheumatic fever (I00-I02)
I01Rheumatic fever with heart involvement
I01.2Acute rheumatic myocarditis

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to I01.2:

categoryI01
Rheumatic fever with heart involvement
View context instructions
chapterCH9
Diseases of the circulatory system (I00-I99)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to I01.2. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

8 raw paths
Degeneration, degenerative1 unique routes
myocardial, myocardium (fatty) (hyaline) (senile)
with rheumatic fever (conditions in I00)
active, acute or subacute→I01.2
Insufficiency, insufficient2 unique routes
myocardial, myocardium (with arteriosclerosis)(2 variants)
rheumatic
active, acute, or subacute→I01.2
with
rheumatic fever (conditions in I00)
active, acute or subacute→I01.2
Myocarditis (with arteriosclerosis)(chronic)(fibroid) (interstitial) (old) (progressive) (senile)4 unique routes
active
rheumatic→I01.2
acute or subacute (interstitial)(2 variants)
due to
streptococcus (beta-hemolytic)→I01.2
rheumatic→I01.2
rheumatic (chronic) (inactive) (with chorea)
active or acute→I01.2
Rheumatic (acute) (subacute)1 unique routes
myocarditis (chronic) (inactive) (with chorea)
active or acute→I01.2

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 314
Other Circulatory System Diagnoses with MCC
DRG 315
Other Circulatory System Diagnoses with CC
DRG 316
Other Circulatory System Diagnoses without CC/MCC

Cross Reference

Find Procedures (ICD-10-PCS)

Find surgical and procedural codes related to Acute rheumatic myocarditis.

Search PCS Codes